GSM alarms used in security and monitoring are gaining increasing popularity. Their use is quite broad, ranging from ordinary urban properties and private homes to large facilities and industrial enterprises. The origins of GSM alarm technology go back to radio pagers, which allowed owners to monitor their vehicles from a distance of 200-300 meters.
A GSM alarm system is quite simple. It consists of sensors and a GSM module connected to the control panel. If a sensor is activated, indicating an unauthorized intrusion, the GSM module sends an SMS to the owner's mobile phone. More advanced models feature voice calls to the mobile phone, as well as the ability to activate and deactivate the entire system from there.